Does anyone have any data on this?
We have very good data on this. Here are the 20 high schools with the most offers to University of Cambridge in the world. The best school in the world isn’t Eton or any school in the UK for that matter but actually the Raffles Institution! Singapore actually has 2 schools in the top 20 which is outstanding given its usually harder for international applicants to get in and the size of the country.